headache

noun

head·​ache ˈhed-ˌāk 

1

: pain in the head

2

: a vexatious or baffling situation or problem

… meetings had become a giant headache.

—Franklin Foer

headachy adjective

or less commonly headachey

ˈhed-ˌā-kē 

Synonyms of headache

• job
• killer
• burden
• effort

Examples of headache in a Sentence

I'm starting to get a headache.

The symptoms include fever and headache.

The city's biggest headache is traffic.

Managing your finances can be a real headache.

Recent Examples on the Web

But many, many more apps are a headache to use on an Android laptop. — Dominic Preston, The Verge, 12 Oct. 2026

Washington Commanders fans woke up Monday morning with a lingering headache from whatever happened at the end of their game against the New York Giants, which ended in a tie. — Ryan Gaydos Outkick, FOXNews.com, 12 Oct. 2026

But the paradox of choice can be a headache for companies needing computing power yesterday. — Jordan Novet, CNBC, 10 Oct. 2026

Various parts of the plant have been used in traditional medicine systems such as Ayurveda to treat conditions including headaches, colic, dropsy, rheumatism, nervous agitation, constipation, dyspepsia, and infections of the eye and throat. — Encyclopedia Britannica, 9 Oct. 2026

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Phrases Containing headache

• cluster headache
• ice-cream headache
• pre-headache
• sick headache
• splitting headache
• tension headache

Rhymes for headache

• awake
• backache
• beefsteak
• betake
• cheesecake
• cupcake
• daybreak
• earthquake
• forsake
• gouache
• handshake
• heartache

Video

An Abbreviated History of American English Spelling

Soop, wimmen, and headake did not make the cut

Kids Definition

headache

noun

head·​ache ˈhed-ˌāk 

1

: pain in the head

2

: an annoying or baffling situation or problem

headachy

-ˌā-kē 

adjective

Medical Definition

headache

noun

head·​ache ˈhed-ˌāk 

: pain in the head

called also cephalalgia

headachy

-ˌā-kē 

adjective